Glass mast.



PATENTED NOV. 6, 1906.

W. SCHUTZ.

GLASS MAST.

APPLICATION rum: 1(u;.1o,1see.

"I In IIrlRl-w, IAIIIIIII. 21..

\VILHELM SCHITTZ, OF CASSEL, GERMANY GLASS MAST.

Specification of Letters Iatent.

Patented Nov 6, 1906.

Application filed March 10, 1906. Saris-1N0 305,300.

To all whom it may concern:

Be it known that I, 'vViLIrELM Scnf'rz, a subject of the German Emperor, residing at Cassel, Germany, have invented certain new and useful Improvements in a Glass Mast, of which the following is a specification, reference being had therein to the accompanying drawings.

In my United States Patent No. 775,637 a glass mast is described and shown which serves for supporting overhead lines of electric railways and for other similar purposes. It has been found that such glass masts, if disposed in crowded streets or great thoroughfares for electric tranzways or in other cases, are liable to fractures at their most strained point-sthat is to say in the street-le el.

My invention relates to improvements in such glass masts whereby they are st rcngthened at their most strained points, so that their lower parts are even enabled to serve as curbstones and are capable of withstanding considerable shocks.

The objects of my improvement are, first, to provide the glass mast wit: two collars, one above and the other beneath the level of the street or the like; second, to provide on the part of the glass mast between its two collars a mantle formed of a plastic material which after hardening is sufiiciently strong, such as mortar, concrete, cement, clay, and the like, and, third, if so preferred, to strengthen the mantle with embedded metallic parts.

I attain these objects by the constructions illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal section through the lower part of an erected glass mast with a smooth mantle. Fig. 2 is across-section through the same on the line A B in Fig. 1. Fig. 3 is a vertical longitudinal section through the lower part of an erected glass mast with a modified mantle. Fig. 4 is a horizontal section through the same on the line C 1) in Fig. 3, and Fig. 5 is partly a vertical longitudinal section through and partly an elevation of an erected glass mast with an ornamental mantle.

Similar letters of reference refer to similar parts throughout the several views.

The hollow tapering glass mast a is substantially the same as described in the said patent, only that it is made in one piece with two collars d d, of which the one is above and the other beneath the level of the street or the like after the glass mast has been erected The distance between the two collars d d is immaterial and may be determined according to experi ence or to the circumstances. A mantle b is formed according to my invention on the lower part of the glass mast a between the two collars d d. This mantle b is made from a plastic material which after hardening possesses the required stiffness and strength, so that the mantle b not only strengthens the glass mast a at its most strained point, but is also capable of withstandin considerable shocks. This plastic matcria may be mortar, concrete, cement, clay, or the like. Preferably the mantle b is further strengthened by means of, metallic parts, such as rings 0, vertical rods, (not shown,) or the like,which parts are embedded in the plastic material during the formation of the mantle b. The shape of the mantle is immaterial and may be chosen according to the circumstances or to the fashion in'vegue. For example, Figs. 1 and 2 show a smooth mantle b of uniform thickness and with several parallel metallic rings c c embedded in it. In Figs. 3 and 4 the mantle b is enlarged in diameter in the le el of the street. Fig. 5 shows an ornamental mantle b with very strong or broad metallic rings 0 0. Of coursealso vertical metallic rods (not shown) ma be embedded in the mantle 1:, if so desiret. The glass collars d d are essential, as they prevent moisture from getting between the mantle b and the glass mast a.

I have shcwn a hollow tapering glass mast of a circular crosssection; but it is obvious that glass masts of any other cross-section may be equal y employed and provided with mantles of a corresponding or convenient cross-section. The number and section of the metallic parts embedded in the mantle is immaterial. Obviously it is immaterial whether the mantle b be for med on the glass mast at the works or on the respective place after the erection of the glass mast.

\Vliat I claim as my invention, and desire to secure by Letters Patent, is I 1. A glass mast made in one piece with two collars, one above and the other beneath the level of the street or the like, n combination with a mantle on the lower partof said glass mastbetween its two collars and formed of a plastic material (mortar, concrete, cement, clay or the like).

2. A glass mast made in one piece with two collars, one above and the other'beneath the level of the-street or the like, in Cvlllbillfltion with a mantle on the lower part of said "lass mast between its two collars and iormed of a plastic muteri a-l (mortar, concrete, cement or the like), and strengthening metallic parts embedded in said mantle during its fornmtion.

3. A glass mast made in one piece with two collars, one ebove and the other beneath the level of the street or the like, in combination with a mantle on the lower part of said glass mast between its two collars and. formed of a plastic material (mortar, concnte, (cement or the like), and a plurality of metallic rings surrounding said glass mastand embedded in said mantle during its formation.

In testimony whereof I have allixed my signature in presence of two WltI1$SOS VVILHELM SCHUTZ. Witnesses WILHELM DOBLER, PAUL SCHMIDT. 

